Update cvmfs/sync_mediator.cc
Update cvmfs/sync_mediator.cc

Co-authored-by: Jakob Blomer <41accfafbf5b91f8f2d77764cb6bdb506cd0b50a@cern.ch>
DrDaveD/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs